<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!-- 数据折线图 -->
      <!-- 安装echart依赖哦 -->
      <div id="main" style="width:100%;height:400px"></div>
    </el-card>
  </div>
</template>

<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
  data() {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {},
  async mounted() {
    const { data: ret } = await this.$http.get('reports/type/1')
    if (ret.meta.status !== 200) return this.$message.error(ret.meta.msg)
    console.log(ret.data)
    // 组件渲染完才能初始化图表
    var myChart = echarts.init(document.getElementById('main'))
    // 差了一点功能。需要合并老师给的
    // 使用lodash合并
    const option = _.merge(ret.data, this.options)
    myChart.setOption(option)
  },
  methods: {}
}
</script>

<style lang='less' scoped></style>
